I like that it's open source which gives me confidence in its reliability as well as ease of use for myself (and others). Nothing really - just get stuck into working with this software! It can be hard at first but once you've figured out how everything works together then things start falling into place quickly enough so don't worry too much about getting your head around all of the features straight away; there are plenty of tutorials online if needed. If anyone hasn’t used ABPDF before they may find some initial set up difficult due to different naming conventions etc., however after that point most users will understand their way around easily enough without needing any help from support staff or documentation/videos available via YouTube channels such as "ABCPdf Tutorials Channel" & "Adobe PTC". Having said that we do have an active community forum where members give each other tips / tricks for solving problems when required.